加速器のリングに含まれる高音速ボース・アインシュタイン濃縮物
Saurabh Pandey1,2, Hector Mas1,3, Giannis Drougakis1,2
1Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, Heraklion, Greece.
Nature
|June 7, 2019
まとめ
研究者はボース・アインシュタイン凝縮物 (BEC) の制御可能な物質波ガイドを作成し,重力マッピングや慣性ナビゲーションなどのアプリケーションのためのコンパクトで敏感な原子干渉計を可能にしました.
科学分野:
- 原子,分子,光学物理学
- 量子制御
- 凝縮物質物理学
背景:
- 高精度な測定はしばしば原子雲による物質波干渉測定に依存する.
- 現在の方法は大きな装置や 微重力環境で 長い尋問時間を要します
- 重力の効果を無効にすると 感度が向上する コンパクトな装置が生まれます
研究 の 目的:
- ボーゼ-アインシュタイン凝縮物 (BEC) をマクロ距離に輸送するための制御可能な物質波ガイドを実証する.
- 尋問時間を延長することで,繊細な測定のためのコンパクトなデバイスを可能にします.
- 超冷たい原子を使って 新しい量子現象と応用を探求する
主な方法:
- 中性原子加速器リングを使用してボース-アインシュタイン凝縮物 (BEC) を輸送する.
- 超音速 (音速の16倍) を達成する.
- 15cmの磁気波の誘導体を利用し,コヒーレンスを維持する.
主要な成果:
- 滑らかで制御可能な物質波導体
- 輸送中にBECの内部一貫性を維持する.
- 高角運動量 (>40,000ħ/原子) と超音速を達成した.
- ピコケルビン精度で制御する
結論:
- コヘレントな物質-波ガイドは,コンパクトなデバイスで延長された相互作用時間を可能にします.
- 超冷たい原子における超流動性,トンネリング,および輸送体制の研究を容易にする.
- 慣性ナビゲーションと重力マッピングのためのポータブル誘導原子インターフェロメーターの道を開く.
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